code: def test_topology_dims():
      topo = Topo(axes=["a", "b", "c"], dims=[2, 3, 4])
      assert topo.world_size() == 24
      assert topo.get_dim("a") == 2
      assert topo.get_dim("b") == 3
      assert topo.get_dim("c") == 4
  
file_path: DeepSpeed/tests/unit/runtime/pipe/test_topology.py
imports: import pytest
  import torch
  import deepspeed.comm
  from deepspeed.runtime.pipe.topology import PipelineParallelGrid
  from deepspeed.runtime.pipe.topology import ProcessTopology
  from deepspeed.runtime.pipe.topology import _prime_factors
  from deepspeed.accelerator import get_accelerator
  from unit.common import DistributedTest
label_desc: Use image node_id 2 for calling a global function with example usage: test_topology_dims() without return types